So wait, you think that them NOT having their souls in there makes it uninteresting, yet you don't want Ralph/Sue involved in this at all. I'm confused, why would having Ralph and Sue as Black Lanterns be so bad?
They'd be temporarily corrupted, would J'onn, Aquaman, Earth-2 Superman, and a bunch of other characters, and then some will come back to life while others will go back to being dead and/or ghost detectives.